public class Caimaliaxi {
    public static final double CM_PER_INCH = 2.54;

    public static void main1(String[] args) {
        double paperWidth = 8.5;
        double paperHeight = 11;
        System.out.println("Paper size in centimeters: " +
                paperWidth * CM_PER_INCH+ "by" + paperHeight * CM_PER_INCH) ;
    }

    public static void main2(String[] args) {
        double x = 4;
        double y = Math.sqrt(x);
        System.out.println(y);
    }

    public static void main(String[] args) {
        int x = 2;
        int a = 3;
        double y = Math.pow(x,a);
        System.out.println(y);

    }
}
